I have 10 pc fans running in my indoor. All of them wired with 3 AC-DC 12V transformers (each one cost me 3â?¬). Each transformer has polarity selection button and voltage output regulable (from 3 to 12V). Wiring in very simple.

I have 4 8cm fans conected to a transformer (it gives 1,2A, and each fan uses 0,2A). Works with lights, to cool them.

Another 3 to other 1,2A transformer (one 12cm fan running at 0,4A and two 8cm running at 0,19A). They work 24/7.

And other 3 running with lighs on, 2 12cm and 1 8cm. This transformer become very hot, because the load is similar to the output. I would prefer to use a 1,5A transformer, but i was unable to find it cheap.

DC fans RPM (=noise and air flow) are easily dimmable, selecting the output V. Aditionally, i have a regulable bay for computers wich can regulate the speed of 4 fans (i have it near the thermohygrometer, so i adjust fans speed according to temp and humidity, specially the one i use as humidifier). I bought the 2 packs of 4 thermaltake fans (2 12cm and 2 8cm) with the regulating bay for 20â?¬ in a local computer store.
knna Reviewed by knna on . How to use computer fans? Ok me and a friend are going to try and set up a lowryder stealth grow in a pc case we have every thing worked out execpt the ventilation. how do i wire up a computer fan to a socket? it has a red cord and a black cord what do i do... i have a general idea but some professional help would be much appreciated lol. Also in the thread i got the idea from the guy says he had a carbonfilter hooke up to the fan any ideas how to do this? thanks for the help and here is a link to the thread (it is Rating: 5